INSECTA. 331 



Phalanx II. Proboscis exsert, tubulose. Labia at the end of 

 the proboscis, sometimes scarcely discernible. 



t Wings incumbent. 



Asilus L. Proboscis straight, porrect. Antennae porrect, approxi- 

 mate, triarticulate, with third joint elongate. Body elongate. 

 Head transverse, above much broader than long, anteriorly barbate, 

 posteriorly separate from the thorax by stricture. 



a) Tarsi without pulvilli. 



Gonypes LATR., Leptogaster MEIG. Abdomen elongate, narrow. 

 Posterior feet elongate, with clavate tibiae. Antennae with biarti- 

 culate pilose style at the point. 



Sp. Gonypes cylindricus, Asilus tipuloides FABK., SCHELLENB. Tab. xxx. 

 fig. i. 



b) Tarsi with two pulvilli. 



*) With apical seta of antennae distinct. 



Ommatius ILLIG., WIEDEM. Seta of antennae plumose. 

 Asilus MEIG. Seta of antennae naked, biarticulate, sometimes 

 clavate. 



Sp. Asilus crabroniformis L., SCHELLENB. Tab. xxix, figs, i, 2, DUMR. 

 Cons. gn. s. I. Ins. PL 46, figs. 10, &c. 



Add sub-genus : Mallophora MACQ. 



* *) With style of antennae conical, short. 



Dasypogon MEIG. 



* * *) With style of antennae short, obtuse, biarticulate. Antennas 

 larger than head. 



Sub-genera : Ceraturgus WIEDEM., Dioctria MEIG. 

 * * * *) Without apical style of antennae. 



Laphria MEIG. 



Add sub-genera : Rhopalog aster, Xiphocera and Megapoda MACQ. 



Hybos MEIG. (Ocydromia HoFFMANNSEGG, MEIG.) Antennas 

 >rrect, triarticulate, with the two inferior joints small, often con- 

 jjoined, scarcely distinct. Proboscis horizontal, short. Head small, 

 globose. Thorax oval, gibbous. Wings large, longer than the 

 cylindrical abdomen. 



